Mechanical parking brake mechanisms

Details Mechanical parking brake mechanisms Mechanical parking brake mechanisms

1981-06-02

1983-06-14

Butler, Douglas C.

Brakes

Wheel

Transversely movable

188106A, 188106F, 188331, F16D 5100

Patent

active

043877923

ABSTRACT:
A mechanical parking brake mechanism which comprises firstly a sector pulley pivoted on the backing plate of a brake drum to guide an intermediate portion of a parking brake wire and formed at its guide face with at least two radial recesses spaced from each other at a predetermined interval and secondly a parking brake wire integrally provided at its intermediate portion with at least two projections to be selectively engaged with the respective recesses of the sector pulley in accordance with the length of pulling stroke of the parking brake wire, thereby to avoid undesired excessive force acting on the parking brake wire and to enhance transfer efficiency in the input force applied to the parking lever of the mechanism.

REFERENCES:
patent: 3322237 (1967-05-01), Keller et al.
patent: 3482658 (1969-12-01), Keller
patent: 3575266 (1971-04-01), Sitchin
patent: 3999637 (1976-12-01), Schumacher

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